National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain in the Southern Appalachians; Fire Weather and Heat in the West; Monitoring Tropical Storm Erin

Heavy to excessive rainfall over the southern Appalachians may bring areas of flooding today. Gusty winds and low relative humidity will bring critical fire weather conditions to parts of the Great Basin and northern Rockies today and Thursday. Hot to extremely hot temperatures are in place through today across parts of the western U.S. Read More >

Current conditions at

Allentown, Lehigh Valley International Airport (KABE)

Lat: 40.65°NLon: 75.45°WElev: 384ft.

Overcast

78°F

26°C

Humidity 76%
Wind Speed N 12 mph
Barometer 29.83 in (1010.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 13 Aug 3:51 pm EDT
Extended Forecast for

Catasauqua PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Mostly cloudy, with a high near 89. Southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then a chance of showers. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Heavy Rain
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 65. North wind around 5 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A slight chance of showers after 2pm. Sunny, with a high near 87. Northeast wind around 5 mph. Chance of precipitation is 20%.

    High: 87 °F

    Sunny then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Mostly cloudy, with a high near 89. Southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 2am, then a chance of showers. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 65. North wind around 5 mph. Chance of precipitation is 30%.
Friday
A slight chance of showers after 2pm. Sunny, with a high near 87. Northeast wind around 5 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 66.
Sunday
A chance of showers after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Wednesday
A chance of showers. Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Catasauqua PA
 40.66°N 75.46°W (Elev. 299 ft)
Last Update:
4:13 pm EDT Aug 13, 2025
Forecast Valid:
4pm EDT Aug 13, 2025-6pm EDT Aug 20, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation